Metamorphic Mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Native Gold (in Jewelry)

Gold (Au)

Moonstone (Adularia)

Potassium aluminum silicate (KAlSi3O8)

Fuchsite on Quartz

Muscovite (KAl2(AlSi3O10)(OH)2) with Chromium impurities

Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)

[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2

Milky Quartz

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Gneiss

Gneiss (High-grade metamorphic rock)

Blue Quartzite

Quartzite (SiO2 with inclusions)

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Sandstone (Micaceous)

Clastic Sedimentary Rock (primarily SiO2 with Mica)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Quartz (Quarzite or Massive Quartz vein)

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Jade

Jadeite or Nephrite (both are commonly referred to as 'jade'). Jadeite: NaAlSi2O6; Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2.

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

Dumortierite Quartz

Dumortierite-bearing Quartz (Al7BO3(SiO4)3O3)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)3Si3O10(OH)2)

Moonstone (Tumbled)

Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Schist

Mica Schist (primarily composed of quartz, feldspar, and mica)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartzite (Aventurine type)

Metamorphosed Quartz Sandstone (SiO2 with inclusions)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Iolite (Cordierite)

Magnesium Iron Aluminum Silicate (Mg,Fe)2Al4Si5O18

Red Garnet

Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

Gneiss with Orthoclase Feldspar

Gneissic Metamorphic Rock with K-Feldspar inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Greenstone (Epidote/Chlorite-rich Metabasalt)

Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))

Rough Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Muscovite Mica in Quartz Matrix

Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)

Fuchsite (Chrome Mica)

Cr-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2

Muscovite (Mica) in Quartz Matrix

Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)